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<h2><span class="refentrytitle">Function template io</span></h2>
<p>boost::pfr::io</p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../reference_section.html#header.boost.pfr.io_hpp" title="Header &lt;boost/pfr/io.hpp&gt;">boost/pfr/io.hpp</a>&gt;

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<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> <span class="keyword">auto</span> <span class="identifier">io</span><span class="special">(</span><span class="identifier">T</span> <span class="special">&amp;&amp;</span> value<span class="special">)</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.29.9.6.7.4"></a><h2>Description</h2>
<p>IO manupulator to read/write <a class="link" href="../../boost_pfr/limitations_and_configuration.html" title="Limitations and Configuration"> simple aggregate </a> <code class="computeroutput">value</code> using its IO stream operators or using <a class="link" href="io_fields.html" title="Function template io_fields"> boost::pfr::io_fields </a> if operators are not awailable.</p>
<p><span class="bold"><strong>Example:</strong></span> </p>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">my_struct</span> <span class="special">{</span> <span class="keyword">int</span> <span class="identifier">i</span><span class="special">;</span> <span class="keyword">short</span> <span class="identifier">s</span><span class="special">;</span> <span class="special">}</span><span class="special">;</span>
<span class="identifier">my_struct</span> <span class="identifier">s</span><span class="special">;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">stringstream</span> <span class="identifier">ss</span><span class="special">;</span>
<span class="identifier">ss</span> <span class="special">&lt;&lt;</span> <span class="string">"{ 12, 13 }"</span><span class="special">;</span>
<span class="identifier">ss</span> <span class="special">&gt;&gt;</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">pfr</span><span class="special">::</span><span class="identifier">io</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">i</span> <span class="special">==</span> <span class="number">12</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">i</span> <span class="special">==</span> <span class="number">13</span><span class="special">)</span><span class="special">;</span>
</pre>
<p><span class="bold"><strong>See</strong></span> <span class="bold"><strong>Also</strong></span> : <a class="link" href="../../boost_pfr/tutorial.html#boost_pfr.tutorial.custom_printing_of_aggregates" title="Custom printing of aggregates"> 'Custom printing of aggregates' </a> for info on how to implement your own manipulator with custom format. </p>
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<td align="right"><div class="copyright-footer">Copyright © 2016-2021 Antony Polukhin<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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